**Which one of the following two families of functions solves the differential equation**
$x^3y'-e^{y}=0$
**for all values of the constant $C$?**
[[☃ radio 1]]
**Use your answer above to find the value of $C$ that satisfies the condition $y(1)=-\ln 3$.**
$ C = $ [[☃ input-number 1]]